GMC Sierra 1500

"Started 2 weeks ago. Caused by deteriorating sensor that caused a slow Freon leak. Led to compressor"

"I have only experienced it once and it was quickly fixed."

"Driver side doesn't get as cold as the passenger side. Mechanic said it's the bleed door. He said it'll cost about $1000 to fix."

"The truck will only work on 2 g. GPS does not work. According to what I can find it cant be updated"

"Initially my check engine light indicated an issue with the catalytic converter. After having it replaced twice, problem returned after initial catalytic converter replacement, and replacing all 4 O2 sensors, the check engine light and the codes for the catalytic converter remain in the OBD-II sensor. The dealer was no help and suggested replacing the entire catalytic converter and O2 sensors again with OEM and that would solve the problem. However, I don't believe the catalytic converter was bad. Around the same time that the check engine light came on, I started having minor issues with electrical systems. The Infotainment screen reverts back to the home screen when the truck is turned off. The parking sensors will activate or tell me that they need service at random times. Dealer did not want to address this issue, just replace the catalytic converter. In the end, I believe I have an electrical gremlin that is affecting the ECM and all of the systems are okay. I have ignored it at this point and my mileage has increased +/-1 MPG."

"Software can not update"

"Brakes locked up while on highway, once in front and once in rear."

"At about 110,000km all the transmission cooler lines were leaking and needed to be replaced. Additionally, oil from the integrated radiator oil cooler leaked into the engine coolant lines which required a replacement of the radiator, engine coolant flush and clean and replacement of all the engine coolant hoses."

"Security system indicated it needed service, but dealer could not view it. It would activate and prohibit engine starting."

"My 5.3 V8 engine looses about 1 pint of oil every 1,000 miles. I believe it goes out the tail pipe. This condition has been a problem since 2014. While under warranty, the dealer tracked my oil consumption and confirmed I was loosing 1 pint of oil every 1,000 miles. The dealer contacted GM and was told that this loss was within GM's specifications and nothing would be done to resolve the oil consumption. This is the only GM vehicle that I or any family member has owned where this condition exists from the factory."

"Developed a knock from the #6 cylinder during a cold morning start. I took cover and rocker arm off and found a push rod was significantly bent. Easy fix and no issues since."

"Mechanics advised full engine replacement because of the impossibility of building this eras GMC gasoline engines, unlike older GMC engines of this type and size, which were easier to rebuild. It took several months to even find a replacement engine in the US."